Sideload builds used to dlopen a bundled libMoltenVK.dylib, which was
only worth having while they could still fall back to OpenGL. Now both
variants link the static MoltenVK from ios/MoltenVK and call Vulkan
directly. PPSSPP_VK_STATIC replaces the IOS_APP_STORE checks in the
Vulkan loader (the iOS libretro core still loads at runtime).
The static MoltenVK needs iOS 15.0, so that's now the deployment target
for all iOS builds.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
